Chapter 1: Start of Piano
Long ago, somewhere in the PIZYL Universe, 1720 PZL time, a group of people started the Piano Plane Corporation. That company wanted to make the most modern planes possible. Their company wasn't a huge success, so then they started building rockets, and therfore rebranded to the Piano Plane and Rocket Corporation. Their first couple rockets weren't that good either, but they did better than the planes, letting them explore much of Droo.
Chapter 2: Acquiring and Exploring
Piano Plane and Rocket Cooperation rebranded branded as Piano Aerospace, and that name would stay to this day. The would start building much better rockets, such as this one. They also acquired bought and acquired Zyster's Aerospace in 1730 PZL time. Zyster's Aerospace specialized in rockets, with most of their rockets being much more fuel efficient than Piano's. Zyster's would build some of the craziest rockets ever, with some help from Piano to learn the algorithm. At that time, Piano And Zyster's Agencies was formed, also called PZ Agencies.
PZ Agencies started going interstellar, exploring the Pinisern Galaxy. They first found the Pulmans System, a small planetary system with a brown dwarf. They set up a colonization base there and continued going, finding another system, and then another system. They found so many systems and set up their bases there. At all the systems, they left a couple people there to gather information about those systems. Finally they reached the Totassa System, the largest system PZL had discovered so far. They stayed about 5 years there, exploring the giant system, until they got tired and made their way back to the Juno System, stopping at the other systems to pick up the people they left behind. While heading back, the found another system, where they set up a base and explored for about 1 month.
Chapter 3: More Acquiring and Airplanes and Rockets
In 1745 PZL time, Londerburst Aerospace joined PZ Agencies. As a result, PZ Agencies got renamed to PZL Agencies, where that name would stay to this day. Londerburst Aerospace specialized in planes, and did not build much rockets. That would change, though.
Londerburst Aerospace built their first plane as a part of PZL Agencies. Then they built their first airliner as part of the agencies. Zyster's quickly followed up, creating their first airliner. After a while, Piano did aswell. Then, Londerburst started creating rockets as part of PZL.
PZL Agencies went on to hunt for more systems, but found only one. Piano and Zyster's showed Londerburst where the other systems are. During this time, while they were on the spaceship, they looked through telescopes and discovered PZINMS-183547, the black hole at the center of the Pinisern Galaxy. The Pinisern Galaxy has a diameter of 1.5 million light years.
Once they got back to the Juno System, they started making rockets and planes like crazy. Piano created this rover complex. Zyster's created this rocket and this plane. Londerburst created this absolute hell of a plane. Keep in mind, there were much more created (see my posts for more). The aerospaces also founded airlines. Londerburst's airline is called Londerburst Airways, Piano's airline is PianoLines, and Zyster's airline is called Zyster's Air. Londerburst Airways had this entire Famous Fleet. At that time they set up a flag for the PZL. Piano's color is yellow, the color for Zyster's is green, and Londerburst's is blue. They made a flag with yellow on top, green in the middle, and blue on the bottom.
Chapter 4: The Modern Era and the PZL Civil War
1760 PZL time. PZL explored some more systems. What they found was absolutely stunning. They found 6 systems, such as the Brasters System, and the Anedserin System. They set of bases there, and even got to meet different aliens, which they allied with. They took some of those aliens back to Droo. Back at Droo, they created more rockets and planes. The aliens even helped with building this lander, and this space probe.
It was 1770 PZL time, and they were building rockets. All of a sudden, an unknown craft crashed at DSC! Turns out, it was a group of people living on Droo that were against the PZL. They ended up going to war. The aliens from the other systems sided with PZL. PZL made military aircraft and sent out bombs and missiles at the enemy group. The enemy group stayed on the sea, building destroyers that would take down PZL planes. After 2 years, PZL ended up winning the war, and the 2 groups allied. They built rockets and planes together, to the present day.